16334420 has 24 divisors (see below), whose sum is σ = 34378344. Its totient is φ = 6519296.

The previous prime is 16334419. The next prime is 16334431. The reversal of 16334420 is 2443361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4251844 + 12082576 = 2062^2 + 3476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16664 + ... + 17616.

It is an arithmetic number, because the mean of its divisors is an integer number (1432431).

Almost surely, 2^16334420 is an apocalyptic number.

16334420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16334420 is an abundant number, since it is smaller than the sum of its proper divisors (18043924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16334420 is a wasteful number, since it uses less digits than its factorization.

16334420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 16334420 is about 4041.5863222255. The cubic root of 16334420 is about 253.7277136712.

Adding to 16334420 its reverse (2443361), we get a palindrome (18777781).

The spelling of 16334420 in words is "sixteen million, three hundred thirty-four thousand, four hundred twenty".